Pith Number

pith:IQ6J5K5A

pith:2021:IQ6J5K5AL4GG56B7C6GUTV2NFT

not attested not anchored not stored refs pending

When expertise gone missing: Uncovering the loss of prolific contributors in Wikipedia

Animesh Mukherjee, Bhanu Prakash Reddy Guda, Debajit Chakraborty, Paramita Das, Soumya Sarkar

arxiv:2109.09979 v1 · 2021-09-21 · cs.SI · cs.IR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IQ6J5K5AL4GG56B7C6GUTV2NFT}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T03:15:56.728696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

443c9eaba05f0c6ef83f178d49d74d2cf6c43f16acb4a0d64331efb5d47b53ab

Aliases

arxiv: 2109.09979 · arxiv_version: 2109.09979v1 · doi: 10.48550/arxiv.2109.09979 · pith_short_12: IQ6J5K5AL4GG · pith_short_16: IQ6J5K5AL4GG56B7 · pith_short_8: IQ6J5K5A

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/IQ6J5K5AL4GG56B7C6GUTV2NFT \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 443c9eaba05f0c6ef83f178d49d74d2cf6c43f16acb4a0d64331efb5d47b53ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a13abf880a15c308948a0240eeeee622245ddce91c4f6eab1e43bd1fd218a394",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2021-09-21T06:05:07Z",
    "title_canon_sha256": "2bca35064010625a66871161bc1a92175417c76d7874798caa4f2e0d24fcd9fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.09979",
    "kind": "arxiv",
    "version": 1
  }
}